Vacuum pump



March 27, 1945; J. EGER vAcUUM PUMP Filed May 5. 1944 FIG. 3.

INVENTOR.

' Jahn Eger ATTORNEYS.

FIQ.- 1.

Patented Mar. 27, 1945 cls VACUUM PUMP J ohnA Eger, Cut. Bank, Mont.,assigner of one-half to S. D. Whetstone, Cut Bank, Mont. y

Application May 5, 1944, serial No. 534,32i 3 claims. (o1. 10s-,184) pThis invention relates to oil well pumping equipment.

The primary object of this invention is the provision of oil wellpumping equipment including oil' well pumping means to create suction inthe oil sands so as to form a partial vacuum at a `desired depth in theoil sands in combination with auxiliary pumping means to increase theilow of oil.

Other objects and advantages ,of the invention will be apparent from thefollowing detailed dey scription.

w In the accompanying drawing, forming a part .of this speciiication andwherein similar reference characters designate corresponding partsthruout they several viewslFigure 1 is a side elevation, partlyinsection, showing details of the pumping equipment down to the lowerend of the main working barrel.

Figure 2is a view partly in side elevation and partly in section showingthe lower portions of the equipment below the main working barrel.

Figures 3 and 4 are cross sectional views taken substantially on therespective lines in Figure l of the drawing.

Figure is a fragmentary cross sectional view showing how certain valvemeans of the pumping equipment is operated to create a partial vacuum inthe oil sands below the main working valve. In the drawing, wherein forthe purpose of illustration is shown only a preferred embodiment of myinvention, the letter A may generally designate the pumping equipment.It includes a conventional oil well casing a, seal-01T packer I I isconnected by coupling means I2 to the tubing i0. The seal-off packer IIis connected by a similar coupling I3 to the upper end of the mainworking barrel I4. A Vsucker rod string I5 is provided inthe tubing andworking barrel I4. In the latter it is provided with plunger means 20consisting of the conventional cups 2| and traveling valves 22 and 23.The latter have conventional cages and balls of a nature well understoodby those skilled in the art to which this invention pertains. At thelower end of the main working barrel I4 I provide an annular flange 30internally screw threaded at 3| to receive a screw threaded portion 32of a tubing piece 34. The'latter, at its lower end, is screw threaded at3B into into additional tubing 31, providing what I prefer to term anauxiliary working barrel 38, vshown in Figure 2 of the drawing. The mainworking barrel I4 at its lower endmay havea detachable extension portion5U screw threaded at 5I thereto and forming a continuance of said mainworking barrel; the portion providing an internal annular valve seatflange 55. i Both of theianges 30 and 55 are provided with verticallydisposed openings therein, and respectively above these valve seatflanges there are provided ring-shaped valves 63 and 64 adapted tounseat with respect tothe passageway 60 upon the'upstrole of the plungermechanism in the main working barrel 'for the purpose Vof creatingsuction in the oil sands below the main Working barrel and thus creatinga zone of suction tending to create a partial' vacuum in the -oil sandsbelow the main working barreVsuri-ounding the auxiliary working barrel38 and therebelow any oilin the casing at the level ofthe ducts 60 willalso be drawn into the working barrel I4, at this point.

The sucker rod assembly I5 includes a rod4 portion` liljgextendingfreely thru the tubing 31 and into` the auxiliary working barrel 38,where the -same isprovided with a conventional plunger mechanism 15,including cups 16 and traveling valves 11 and 18. At the lower end oftheauxiliary working barrel 38 there is provided an anchor or standingvalve assemblage 19, including the usual parts well known to thoseskilled in the art to which the invention relates.

In operation, as the sucker rod assembly I5 is` on the upstroke, the'plunger mechanism 2D operating in the main working barrel I4, will thrumanipulation of the valve mechanisms at the lower end of the mainworking barrel, create a suction in the oil sands externally of thetubing forming the auxiliary working barrel 38. If the oil extends inthe level of the lower end of the working barrel I4, the oil of coursewill be pumped into the main working barrel thru the openings 60. Sincethe sucker rod assembly extends into the auxiliary working barrel 38,the plunger equipment therein will operate to draw oil from the oilsands in the vicinity of the zone of suction or partial vacuum which hasbeen created by the plunger mechanism in the main working barrel anddraw oil from the oil sands thru the standing valve 19 into theauxiliary working barrel, from whence it is pumped upwardly thru thetubing 31 into the main working barrel and thence upwardly thru thetubing to the point of discharge.

In conventional practice the main working barrel I4 may have a diameterof five or six inches and the auxiliary working barrel may have adiameter of two or three inches. These dimensions are `not to beconsidered as restrictive, since they can be departed from, as is quiteobvious. Indeed, it is not necessary to vary the dimensions o the mainand auxiliary working barrels, since they could be the same; theimportant part being that a zone of partial vacuum is created in the oilwell casing and sands below the main working barrel. I have found thatwith an oil well twelve hundred feet deep, if onethird of the weight ofthe tubing is placed upon the packer, the latter will seal-off the oilwell casing and with the tubing in the proportions above specified, Iwill obtain an increased iiow of oil from the Well of from twenty-ve percent to fty per cent.

Various changes in the shape, size and ar rangement of parts may be madeto the form of invention herein shown and described without departingfrom the spirit of the invention or the scope of the following claims.

I claim:

1. In an oil well pump the combination of tubing having a seal-of!packer thereon, a working barrel, a sucker rod assembly including aplunger and a traveling valve operating in the working barrel, valvemeans on the lower end of the working barrel operable upon the upstrokeof the plunger to create a zone of suction in the well exteriorly of thetubing below said valve means, a tube connected to and supported by theworking barrel depending below the working barrel and below said valvemeans and located in the said zone of suction, and a plunger andtraveling valve connected with the above mentioned sucker rod assemblyand operating in the last mentioned tube for sucking oil into said tubefrom the above mentioned zone of suction in the Well.

2. In oil well pumping equipment the combination of tubing adapted to beplaced in an oil Well casing, packer means connected with the tubing forsealing off the well casing between the same and the tubing, a workingbarrel conmeans associated with the working barrel, a sucker rodassemblage including plunger and traveling valve means operating in theworking barrel above said first mentioned valve means for creatingsuction in the well'exteriorly of the pumping equipment below said valvemeans which is associated with the Working barrel, an auxiliary workingbarrel, means connecting the auxiliary working barrel with the iirstmentioned working barrel so as to extend into the suction area in thewell below the main working barrel, and plunger means connected with thesucker rod assemblage operating in the auxiliary working barrel fordrawing oil thereinto and lifting it into the main working barrel.

3. In oil well pumping equipment the combination of tubing, a seal-offpacker connected with the tubing, a main working barrel, a sucker rodassembly, a plunger assembly connected with the nected with the tubingbelow said packer, valve sucker rod assembly operating within the mainworking barrel a valve seat connected with said working'barrel below theplunger assembly having port means opening directly into the well, avalve operating upon said valveseat adapted to be unseated upon theupstroke of the plunger assembly in the main working barrel for creatingsuction in oil well sands below said main working barrel, tubingconnected to and supported by the main working barrel extending belowthe valve at the lower end of the main working barrel into the Zone ofsuction which is created in the well sands as an incident of operationof the plunger assembly in the main working barrel,v said last mentionedtubing including f a second working barrel, plunger means connected withthe sucker rod assembly and operating in said second working barrel fordrawing oil thereinto and lifting it upwardly into the main workingbarrel.

JOHN EGER.

